YOU WOULD SAY I'M ENGLISH. quite simply because that has been the commonly used nationality reference for people from England for hundreds and hundreds of years. or by extension British because i'm from Britain. not rocket science.

George III had a particularly severe form of porphyria. His first attack occurred in 1765, four years after his marriage to Queen Charlotte. Further signs of the disease showed up in 1788-1789. From 1811 to the time of his death in 1820 the royal patient became progressively insane and blind. He was nursed in isolation, and kept in straight jackets and behind bars in his private apartments at Windsor Castle.